Pump.



T. B; MARTIN.

PUMP.

APPLICATION FILED SEPT. 6, 1911.

Patented May 7, 1912.

UNITED STATES PATENT OFFICE.

THOMAS B. MARTIN, or rEXIoo, NEW MEXICO.

PUMP.

To all whom it may concern Be it known that I, THOMAS E. MARTIN, acitizen of the United States, residing at Texico, in the county of Curryand State of New Mexico, have invented new and useful Improvements inPumps, of which the following is a specification.

This invention relates to certain novel and useful improvements in pumpsand has particular application to a pump adapted especially for liftingwater from deep wells.

In carrying out my invention, it is my purpose to provide a pump whichwill embody the desired features of simplicity, efficiency, durabilityand reliability, and by means of which the water may be continuouslylifted or pumped from a comparatively small deep well.

With the above-recited objects and others of a similar nature in view,the invention consists in the construction, combination and arrangementof parts, set forth in and falling within the scope of the appendedclaims. 1

In the accompanying drawing :Figure l is a vertical longitudinalsectional view taken through a pump embodying my invention. Fig. 2 is ahorizontal cross sec tional view taken on the line 2-2 of Fig. 1. Fig. 3is a similar view taken on the line 83 of Fig. 1.

In the present instance, have shown a double-acting pump of onepreferred form of my invention, the latter having particular applicationto the construction of the working barrel of the pump.

Referring now to the accompanying drawing in detail, the numeral 1indicates the well casing within which is located what, for the sake ofconvenience, I have termed the outer cylinder shown at 2, the lowerportion of said cylinder being closed as at 3.

The numeral 4 indicates an inside cylinder which is enveloped by theoutside cylinder 2, said inside cylinder being open at the top andbottom as at 5 and 6, respectively. The outside cylinder is providedabove the inside cylinder with a conical or reduced portion 7, leadingto the discharge pipe 8, the latter having the branch or T- discharge 9communicating therewith. It will be noted that at its upper end or atthe top of the conical section the outer tube is of substantially thesame dimensions in cross diameter as the inner tube or cylinder. Itwill, of course, be understood that the two Specification of LettersPatent.

Application filed September 6, 1911.

Patented May '7, 1912. Serial No. 647,825.

cylinders are submerged in the body of water in the well. At the bottomof the working barrel, I provide four lateral or side openings orpassageways 10, each of which is controlled by a valve formed of astopper or plate section 11 and a stem 12, said stem being supported inthe bar or strip 13, which is perforated to permit the passage of thestem while 14 indicates a tension spring surrounding the stem of thevalve between the bar and the end 15 of the stem, said spring normallytending to hold the valves in closed position. The bottom opening 6 ofthe inside cylinder is controlled by means of the plate or disk valve16, the stem 17 of which passes through an opening in the bar 18,extending transversely of the opening 6, while 19 indicates a tensionspring for drawing the valve in closed position. Near the top of theworking barrel, the outer and inner cylinders are in communicationthrough the medium of four lateral openings or passageways 20, each ofwhich is controlled by a plate valve or disk 21, the stem 22 of eachvalve being tensioned by the spring 23, said stem passing through bars24. The side valves at the top and bottom form discharge valves and areall similar in construction.

The numeral 25 designates a plunger rod, the lower end of which extendsinto the inner cylinder and carries the piston or plunger head 26. Thisrod 25 passes through a collar 27 at the top of the inner cylinder,while hinged to said collar at 28 are the four flap valves 29 which aredesigned to open upwardly by pressure eX- erted on the under sidethereof as the water passes through the openings in the valve on theupward movement of the piston, While upon the downward movement of thepiston water pressure from above assisted by gravity shuts the fourflaps of the valves thus keeping the water from going back into thecylinder.

From the description thus far given, it

will be seen that I employ a pump having two cylinders, the outercylinder being longer than the inner one, while the latter is open ateach end and is provided with four openings in the side thereof adjacentto each end, said openings alining with similar openings in the outsidecylinder. The intake valves, four at each end control the communicationbetween the two cylinders at these openings, while valves are alsoemployed at the top and bottom of the inner cylinder.

From the above description, taken in connection wit-h the accompanyingdrawings, the construction and operation of my improved working valvewill be readily apparent. As the piston rises in the cylinder, the lowerdischarge valve closes and the water flows in through the intake valvesat the sides of the cylinder near the lower end thereof. As the pistondescends, the upper discharge valve closes and the water flows inthrough the four intake valves in the sides of the cylinders near thetop thereof and discharges out at the bottom to form side valves, theWater in discharging from the inside cylinder passing up in thedischarge pipe.

In the construction of my pump, the combined area of the opening of fourof the intake valves at the sides is substantially equal to the crossarea of the inside cylinder so that friction is avoided. It will be seenthat I have provided an exceedingly simple and efficient form of pumpwhich is especially adapted for small, deep wells. While I have hereinshown and described one particular embodiment of my invention, I wish itto be understood that I do not confine myself to all the precise detailsof construct-ion herein set forth, as modification and variation may bemade without departing from the spirit of the invent-ion or exceedingthe scope of the appended claims.

I claim 1. In a pump, the combination with a casing, of an outsidecylinder arranged therein and closed at its bottom, an inside cylinderWithin the outside cylinder, said inside cylinder being open at the topand bottom and having openings in the sides thereof and alining withsimilar openings in the outside cylinder, a valve controlling theopening at the bottom of the inside cylinder, valves cont-rolling theside passages between the outside and inside cylinders, a piston movingin the inside cylinder, a flap valve controlling the opening at the topof the inside cylinder, and a discharge pipe leading from the cylinders.

2. In a pump, the combination with a casing, an outside cylinder locatedtherein and having a closed bottom, an inside cylinder within theoutside cylinder and open at the top and bottom thereof, a springtensioned disk valve controlling the opening at the bottom of the insidecylinder, a flap valve composed of hinged sections controlling theopening at the top of the inside cylinder, spring tensioned valvesarranged at the sides of the inside cylinder and controlling lateralpassageways between the inside and outside cylinders, a reciprocatingplunger working in the inside cylinder, and a discharge pipe leadingfrom the cylinder.

3. In a pump, the combination with a casing thereof, of an outsidecylinder having a closed bottom portion, a cylinder within the outercylinder and spaced apart therefrom having an open top and bottom end, avalve closing the opening at the bottom of the inside cylinder, and aflap valve comprising a plurality of hinged sections opening upwardlyand controlling the opening at the top of the inside cylinder, saidinside and outside cylinders having lateral openings in the sidesthereof near the top and bottom, and valves controlling the sideopenings, each of saiclralves comprising a disk member, and a stemconnected to the disk member, a bar supporting the stem, and a springsurrounding the stem for tensioning the valves, a plunger working in theinside cylinder, a conical reduced extension at the top of the outsidecylinder, and a discharge pipe connected to said extension.

In testimony whereof I atiix my signature in presence of two witnesses.

THOMAS B. MARTIN.

Witnesses G. 0. SMITH, M. M. CRAIG.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

